4021286788 has 12 divisors (see below), whose sum is σ = 7343219520. Its totient is φ = 1923224072.

The previous prime is 4021286783. The next prime is 4021286851. The reversal of 4021286788 is 8876821204.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (46).

It is not an unprimeable number, because it can be changed into a prime (4021286783) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 21854728 + ... + 21854911.

It is an arithmetic number, because the mean of its divisors is an integer number (611934960).

Almost surely, 2^4021286788 is an apocalyptic number.

It is an amenable number.

4021286788 is a deficient number, since it is larger than the sum of its proper divisors (3321932732).

4021286788 is a wasteful number, since it uses less digits than its factorization.

4021286788 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 43709666 (or 43709664 counting only the distinct ones).

The product of its (nonzero) digits is 344064, while the sum is 46.

The square root of 4021286788 is about 63413.6167396246. The cubic root of 4021286788 is about 1590.2119607198.

The spelling of 4021286788 in words is "four billion, twenty-one million, two hundred eighty-six thousand, seven hundred eighty-eight".